H3 Weights

[rff105]

Right now my mechanic has me at 110F 120D 110T we will usually carry up to 4000lbs additional evenly distributed. Where should i be?

115F 120D 100T to be safe?

[Jon Wehrenberg]

Richard....there is one thing I'll bet we all will agree on relative to tire pressures. If you want to be on the safe side go a little higher with pressures.

[Joe Cannarozzi]

105 why not keep everything at 110 in the name of uniformity. Considering the drive is the only axle with a four tire configuration thus making per tire load lesser there than the steer and tag I see no reason for that additional 10 lbs pressure.

I am still convinced that a 120 cold pressure amount is either too much or unnecessary or both.

[Jon Wehrenberg]

Hey Joe, the ragin Cajun, otherwise known as Tuga runs 130 in the front on his 315s.

[Joe Cannarozzi]

That's O/K nobody's perfect

If his tire wear pattern is good at that pressure I would define that scenario as sacrificing a smoother ride for possibly better mpg.

[Ray Davis]

As a comparison to Richard's weights, I got a chance to weigh my XL2 this weekend. Couldn't do both sides independently, but here's what I got


Steer - 17480 == 8740 per
Drive - 18440 == 4610 per
Tag - 11540 == 5710 per
Total - 47460

According to the chart in Richard's post http://forum.prevostownersgroup.com/...71&postcount=3
I should be running 125 in the front, but both the drives and tags fall off the minimum of 85 lbs.

Marathon manual recommends 125, 120, 110.


Any thoughts? Obviously I'm concerned with front end weight, but that was fully loaded with two people in the front of the bus.

Ray

[garyde]

Hi Ray. I have 365's on my front and I run them at 110 lbs. The chart says 100lb for my front axle weight. The drives 90 and the tag 100lbs. I had new 315's put on last week at Prevosts (Michelins) . They put 120 lbs in both the drives, and the tag.
So, the way I look at it, the chart gives you recommended tire pressure which you should maintain as a minimum for your weight. If you choose to add more for personal preference, I see nothing wrong with this keeping in mind the maximum rating for the tire.
Also, what I have found happenin with my tires, they wil increase 5 lbs when hot, so I would not exceed 120lbs.

The Tire guide also recommends the tires be inspected by a qualified Tire
dealer once a year.

[Ray Davis]

Gary,

You know, perhaps I didn't look close enough, and maybe I've got 365's on the front? Would certainly make sense. I'll check again next time I go out. I do know for sure the drives and tag where 315's.

[Ray Davis]

Nope, I was right first time 315's on my steer axles. Might need to shift some of the stuff I don't use regularly to under the bed for storage, and lighten up that front axle a bit.

[mikedee]

I was just at Mira Loma Prevost and priced upgrading my front tires from 315's to 365's about $2,600.00.

When I get to my shop I am going to re-weight the bus. I had the bus ride height adjusted and tires lined up since I last weighted. It will be interesting to see what it did to my front weights. The past owner had in low in the rear by about 1.1 inch

I am going to take the weights, look up the PSI required on the Michelin charts add 5 lbs and go with it.